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Bun adds pnpm-style isolated installation mode

Bun adds pnpm-style isolated installation mode

5 comments

·July 19, 2025
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Jarred

This will ship as part of the Bun v1.2.19 release, which we are aiming for tonight.

There is a Windows-only bug in the isolated install mode blocking us from using isolated installs ourselves in the bun repo, and we need to fix that before we can release this.

If you want to try this early, you can run `bun upgrade --canary` and `bun install --linker=isolated` or put `install.linker = "isolated"` in bunfig.toml.

Isolated installs are a significant performance improvement on Windows (10x, sometimes 20x faster installs) and a minor positive or neutral performance impact on macOS and Linux. More importantly, they make using bun install in monorepos a lot more reliable by preventing dependencies from loading versions of other dependencies they did not specify in their own package.json.

Happy to answer any questions about Bun

8n4vidtmkvmk

Cool. Bun is already pretty fast on Windows, but I welcome more improvements. Thanks for all the great work!

FYI, there seems to be some bugs with installs yet that cause bun to crash. Might be related to having an old package-lock or old node_modules or switching back and forth between WSL and Windows proper. Bun just crashes. Deleting all lock files (bun and npms) and node modules usually fixes it.

gedy

Bun is great, keep up the good work!

dsabanin

Really loving Bun these days. Was really pleasantly surprised using their shell scripting API in typescript - single file, shebang line, straightforward DSL, support for piping data here and there.

Really, really nice and ergonomic. Made a few utility scripts today and enjoyed it much better than bash.

https://bun.com/docs/runtime/shell

papichulo2023

Recently I migrated some small bash scripts to Js thanks to bunjs, chose it because its simplicity, speed and nice out-of-the-box features (db scripts without external deps). Quite happy with it, now I dont to relearn bash syntax every few months when I need to do some minor changes. Also, Javascript is prob the language that llvms understand the best which is a cool thing on these days.